OPERATION
When de-energized, the SV10-21 allows flow from 2 to 1, while flow from 1 to 2 is severely
restricted. When energized, the valve closes, blocking flow from 2 to 1. In this mode,
flow from 1 to 2 will be allowed after overcoming the solenoid force. This requires 3.4 to
10.3 bar (50 to 150 psi). For bi-directional capability, see model SV10-23, page 1.053.1.Operation of Manual Override Option: To override, push and hold override button.